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Instruction Manual
IM-106-880C, OI
September 2009
3-5
Hazardous Area OCX 8800
Setting Test Gas Values with the LOI
1. Use the "Z" pattern to enter the LOI menu tree.
2. From the SYSTEM menu, select Calib Setup.
3. From Calib Setup, select O2 High Gas %. Enter the percent O
2
used
for the high O
2
test gas.
4. Select the down arrow and the next selection will be O2 Low Gas %.
Enter the percent O
2
used for the low O
2
test gas.
5. Select the down arrow several times to display COe Test Gas. Enter the
CO concentration (ppm) used for COe test gas.
CALIBRATION
SOLENOIDS
The Hazardous Area OCX 8800 can be provided with optional calibration
solenoids for the purpose of performing autocalibration. The solenoids are
controlled by the Hazardous Area OCX 8800 software and automatically
switch in the proper calibration gas during the calibration cycle.
A Hazardous Area OCX 8800 shipped from the factory with calibration
solenoids must be configured before autocalibration can be implemented.
This same process must be performed any time a replacement card stack is
installed.
Configuring the Calibration Solenoids
with the Field Communicator - HART
1. Use the 375 Field Communicator to access the HART menu.
2. From the DETAILED SETUP menu, select CAL SETUP.
3. From the CAL SETUP menu, select O2 CAL PARAMS/COe CAL
PARAMS.
4. From the O2 CAL PARAMS/COe CAL PARAMS, select Solenoids.
Select Yes to enable the solenoids.
Configuring the Calibration Solenoids with the Field Communicator -
Fieldbus
1. Use the 375 Field Communicator to access the Fieldbus menu.
2. From the TRANSDUCER block menu, select O2 CAL/COE CAL.
3. From the O2 CAL/COE CAL menu, select O2 CAL SETUP/COE CAL
SETUP.
4. From the O2 CAL SETUP/COE CAL SETUP, select Solenoids. Select
Present to enable the solenoids.
Configuring the Calibration Solenoids with the LOI
1. Use the "Z" pattern to enter the LOI menu tree.
2. From the SYSTEM menu, select Calib Setup.
3. From the Calib Setup menu, select Use Solenoids. Select Yes to
enable the solenoids.